<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
			var arr = new Array();
			console.dir(arr);

			Array.prototype.abc = function() {
				console.log("扩展的方法");
			}

			arr.abc();
		</script>
	</head>
	<body>
	</body>
</html>
